I have a .50 cal Traditions Pursuit Ambush that I am taking to Kansas for a late muzzleloader hunt. In the early season hunt I shot 250 grain Barnes spit-fire sabots with 2- 50grain IMR White Hots. My guide recommended stepping up to 3 pellets since the shots can be up to 200 yards or more. Is my gun OK to shoot 150 grains? Any other load recommendations?